CLI Guide

Security Commands 948
User Guidelines
The administrator must ensure that any methods configured by the
Authentication Manager are enabled (e.g. enable IEEE 802.1x using the
dot1x system-auth-control command). Enable MAB using the mab
command.
Example
console(config)# authentication enable
authentication event server dead action
This command configures the actions to take when no authentication server
is reachable. Use the no form of the command to set the interface
configuration to the default.
Syntax
authentication event server dead action [{reinitialize | authorize}[vlan
vlan-id ]]
no authentication event server dead action
• reinitialize—Re-authenticate hosts, potentially into the critical data
VLAN.
• authorize—Hosts on the data VLAN are switched to the critical data
VLAN without re-authentication.
• vlan-id—The critical data VLAN identifier.
Default Configuration
By default, critical data VLAN capability is not enabled.
Command Mode
Interface (Ethernet) Configuration mode
User Guidelines
The command configures the critical data VLAN ID. If the VLAN ID is not
specified, the port PVID is used as the critical data VLAN ID.